3.Good smooth and high strength4. Diameter from 1mm to 120mm,Length from 100mm to 2000mm, multi bores tubes can be made. 5. Max working temperature 1800.6. Out surface can be grinded drilling hole to make tight tolerance and right instillation. 7.Large quantity in stock makes fast delivery and competitive prices.8.OEM and ODM are welcomedMain performance index about alumina ceramic tube:

Project

Test the condition

Unit

99 porcelain

95 porcelain

Talc porcelain

Backbone

99%AL2O3

95%AL2O3

MgO.SiO2

Physical property

Density of volume

Normal atmospheric temperature

g/cm3

3.8

3.6

2.8

Airtight

Normal atmospheric temperature

.

.Pass

Pass

-

Absorbing water rate

Normal atmospheric temperature

%

0

0

0

Temperature that frit

°C

1800

1650

1350

Mechanical performance

Rockwell hardness

Normal atmospheric temperature

HRA

88

86

76

Resist the intensity of turning back

Normal atmospheric temperature

Mpa

350

320

150

Compression strength

Normal atmospheric temperature

Mpa

1300

1200

900

Hot performance

Use temperature at most

°C

1700

1600

1200

Heat resistant shaking

20O°C-1100O°C

10Num

Pass

Pass

Pass

Hot coefficient of expansion

20O°C-80O°C

×10-6mm/°C

6.5-8.5

6.5-8.0

5.0-6.2

Heat-conduction rate

25°C

W/m.k

29

25

2.9

300°C

W/m.k

18

13

2

Dielectric constant

The medium lossing

1MHz2O°C

×10-4

≤2.5

≤4

≤8.0

The angle tangent is worth

1MHz8O°C

×10-4

≤3.5

≤4.2

-

Dielectric strength

Normal atmospheric temperature

KV/mm

15

16

20

Dielectric constant

1MHz2O°C

9-10.5

9-10

≤7.5

Resistivity of volume

2O°C

Ω.cm

>1012

>1012

>1013

10O°C

Ω.cm

1012-1013

1012-1013

1010-1011

30O°C

Ω.cm

>1012

3.1×109

5×108

Products photos :

Packaging of alumina ceramic tube:PE bag inside outer carton(930*630*230mm),finally make the wooden pallet(950*950mm 950*1000mm) or according to your requirement

Shipping of alumina ceramic tube: deliverywithin 15 days after confirm the order.